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Experimental Composite Propellanthttp://www.rocketryforum.com/showthread.php?51276-Experimental-Composite-Propellant

James,

I've checked out your blog from time to time. Very cool stuff. One thing I haven't seen on there is how you wire your Apogee charges on high altitude flights. Are you using BP charges, a...

Why not first try something more reasonably attainable like the N altitude record using a "lesser" motor like the CTI N3301? If that works then proceed with an N5800 flight. I'm not sure why people...

2 alts. and 6 alt. capable rockets. Looking to my daughter's 2nd grade math worksheets that comes out to be 1/3 of an altimeter per rocket. If I count the rocket hanging in a tree for the last six...

Did you try changing the com port #?

On the AT Facebook page a few weeks ago they confirmed that copperheads were going away and indicated there was a supplier issue sourcing the copperheads. So while this thread is mostly speculation...

Right, I put together the transmitter board and plan to fly it paired to a Sparkfun XBEE USB board on the receiving end plugged to a laptop, reading and logging the coordinates with a terminal...

Top flight will make you a custom sized chute if you ask.

If you've got lots of filling to do or even a moderate amount, I would try an epoxy based filler such as Aeropoxy light or Super fil. I've used both, but I haven't used the Aeropoxy since I tried...

Not a big fan of the long skinny motors, but that's what sells I guess.
I'd pretty much rather fly a single grain anything than a 3-4 grain of the same impulse. Love the longer burn. Here's to...

The forward insulator would work, but since AT took the time write instructions that include the seal disk, I would think that would be the intended part since it provides a better seal. For...

The directions on the resources section of the AT site call for the 2 grain spacers o-rings and one seal disk o-ring. Sounds like a slip-up of parts packing at AT. I don't see a fiber washer in the...

Here is the breather material I used: http://www.aircraftspruce.com/catalog/cmpages/vb3450breather.php

The purpose of the absorbing material is to absorb the resin, and to also breathe, or let...

I'm no expert, but did my first bagging session this weekend with my Harbor Freight rotary vane pump. It passed its first test on a 12 hour continous run without a hiccup. For $90, I'm gonna run it...

I've got one of those. It's probably about 10 years old. Kicks butt. Totally compatible with all the Dremel bits.

Dick,

I was planning to only go Friday, but Friday looks like a bad weather day. If not Friday I may try to go Saturday or Sunday. If I go I'll be on the lookout and stop by.

Mark

We had another version of these 17 year orange and black critters about 10 years ago. I guess this is a different brood.

Yeah I stuck to the schematic. Thanks for the technical support!

I might fly it at the MDRA launch this weekend if I can make it out.

Success! I used my my $10 Sparkfun iron and my daughter's magnifying glass from her bug catcher. Eye strain from soldering those 603 sized SMDs notwithstanding, it turned out alright. I was...

That pressure plot is nice and clean. You must be running that through a low pass filter.

Argo ___ yourself. j/k.

Don't know. I've only been there for LDRS. You probably need to ask the club.

Oh I didn't know you needed to do your NAR L3.
They have a commercial day on Saturday at their May launch. NAR members can launch on a commercial day. Check the schedule....

Definately not the sodfarm MDRA launches from after Red Glare. The waiver might be 17,000 ft but generally they recommend flights below 4,000 feet for the sod farm. Unless you want to risk landing...

Dude, nothing to work yourself sick over. Go work off the stress and sand some balsa or something :)

I've noticed the BT-101 tubes at Semroc have tripled in price the last 3-4 years. I thought...

Vac bag test part II. I put on a new bag. I discovered the last bag had a puncture from the corner of one of the fins. I also put teflon tape on one of the quick disconnect fittings I had missed. ...

Thanks. It is just a 55 gallon trash bag. I tied a knot in the forward end, closed end around the fins. I am using the cheapest Harbor Freight 2.5 CFM pump, running continuously. This is my...

Tested the vacuum bag setup on my MDRM.
124056

Never said I didn't believe it. Wildman needs to update his site is all. Peace.

Well there you go. Maybe I've been living under a rock, but when one of the largest vendors still has that on their website...

Wildman said he had the 38 mm starter set specially made for him,...